Improvement in combined rule



waited ,telstra figment mijn,

EBENEZER A. coonns, OFPHILADELPHIA, PENNSYLVANIA,.ASSIGN0R yTo l To all whom t-may concern.-

consists in locating a spirit bulb PHILADELPHIA PATENT AND NOVELTY COMPANY, 0F SAME PLACE. n 3` il Letters Patent No..104,577, dated June 21, 1870.

`IM`1=R` vraunxrrm COMBINED nunnfnnvnr., cLzNoMnTER, am.

l W i, v Y The` `Schedule eferd to in these Letters Patent and making part of the same Be it known that I, Ennnnznn A. Goonns, ofthe city and county of Philadelphia and State of Pennsyl' `vania, have invented a new and useful Implement; and

'Ido hereby declarethe following to be arclear and4 exact description `of the nature thereof', suicient to enable others skilled inthe art to which my invention appertains to fully understand and use the saine, reff erence being had to the accompanying drawing mak-v `ingpart of this specification, in which-4- Figures 1,2, 3, and. 4 arejviews illustrating;` the application of my invention.

Figures 5 and Gare detached views.

Similarf-letters of reference indicate corresponding parts in the several figures. V

My invention is animplement o r instrument coni-l bining a rule, level, plumb, square, clinometer, Ste., and n iu or on the joint of a rule, andcovering it wit-ha cap, on which is inscribed the degree scale.,

Inthe drawingy l i A represents one section of a joint-ed rule, and

D, the othersection.

The section 'D is formed at one end with projections d d, which enter a-circular opening `in the secj tion A, and thereby form th'ejoint ofthe rule. A spirit bulb, S, is located between the projections d d, and arranged inthe longitudinal direction of' the section D, i l

,l C represents a cap or disk, which issecured to the projections flof` sectional), and overlaps the circular opening of the section A, whereby the bulb is held in placefandrthe jointof thel rule prevented from disengaging.

i The face of thiscap is graduated with the degrees of a circle, andon the `,section A is marked or alixed an index-hand, B, which points toward the degrees on the cap C.

In iig.` 1 the rule is closed, iu which position it may A be used as a level by standing it on its edge or lay` filar to Iordinary rules, j the joint and the location therein ofthe spiritbulb,`

`the circle, theouter `ing it dat. Ii'it is open, as in iig. 2, it maybe usedV n l ,as a level for a long bearing-surface. z Fig. 3 represents its application as a plumb. and

square, the line E, illustrating a wall, and G, a square block.

VFig. 4 shows itsvuse as a clinometer. The section" A is placed on the incline, while the sectionlD ,has E l, l v

degree-cap or plate 0,unl `til the bulb shows the level.

been raised, and with it the Tile index-hand B will now indicate the exact degree of inclination.

The spirit bulb might be' arranged on thcoutside of .th'e joint of the rule,

A but its exposed condition would render it an undesirable location; yet, if made toinove with the section D, the operation will be they same as that previously described. A

The screws whichholdvthecap C on the projection d d, may pass directly into the section D along 'the sides' ot' the bulb, and thus serve to hold the latter in place without the assistance of the projection 17,

but` .these are desirable, in view of theperfect joint.

they produce, and the protection of the bulb they afford.

Occasion may present other plement. v

It will be seen that applications of this imthe rule is, iu all respects, sim# except-ing the construction of and that its operation is simple and eiiicient Having thus described my invention, n What I claim/as new, and desire to secure by LeitersPatcnt, isl A rule-joint, which allows the arms to play around n portion of the joint having a graduated scale, and the interior a spirit bulb upon it, substantially as herein shown and described. v

To the above I have'signed my name this 21st day oi' April, 1870.

Witnesses: EBENEZER A. GOODES.A J. RANKINTON, A. GossMAN. 

